Clamp and contact terminal



sept.' ze, 1944. C. w. SPENCE 2,359,256

CLAMP AND CONTACT TERMINAL l Filed Oct. 26, 1942 A i: le 'Qg/ 12 12 f,NNN

ecyl Wplyaence/ IN V EN TOR.

ATTORNEYS Patented Sept. 26, 1944 UNITED STATES PATENT OFFICE CLAMP ANDCONTACT TERMINAL Cecil W. Spence, Beaumont, Tex.

Application October 26, 1942, Serial No. 463,384

2 Claims.

My invention relates to electric circuits, particularly of the temporarytype, and has among its objects and advantages the provision of animproved clamp and terminal.

In the accompanying drawing:

Figure 1 is a side View; and

Figure 2 is a sectional View substantially along the rline 2 2 of Figure1.

In the embodiment selected for illustration, I make use of a fiber blockI provided with two parallel grooves I2 for partial reception of feederlines I4. These lines are clamped to the block II) through the medium ofa wooden block I6 and a bolt I8 which passes through aligned openings intheblocks I0 and I6.

Two contact screws 20 are threaded in the block I0 and are provided withpointed ends 22 adapted to penetrate the insulation on the feeder linesI4 to secure good electrical connections. The heads 24 of the screws 2Dare housed in bores 26 in the block I0 and are of the slotted type forcoaction with a screw driver.

Two openings 28 are provided in the block I0 for the reception of loadwires 3B, which wires are clamped against the screws 20 by screws 32threaded in the block I0. Openings 34 are provided for the heads 36 ofthe screws 32 and these heads are slotted for the reception of a screwdriver.

My clamp and terminal structure facilitates the erection of temporarywiring on large construction jobs. A number of clamps and terminaldevices may be associated vwith the feeder lines I4, and the devices maybe quickly and easily adjusted along the lines by merely unloosening thescrews 20. The load wires 30 are held in rm engagement with the screws20 so as to establish good electrical connections. Because of thegrooves I2, the feeder lines I4 are effectively supported inpredetermined positions for coaction with the screws 20 through meretightening of the bolt I8. The invention eliminates the necessity oftaping and peeling feeder lines and greatly prolongs the life of thefeeder lines.

Without further elaboration, the foregoing will so fully illustrate myinvention, that others may,

by applying current knowledge, readily adapt the same for use undervarious conditions of service.

I claim:

l. In a conductor connection, a, pair of blocks of insulating material,means clampingly holding the blocks against a pair of conductorsextended therebetween, a pair of conducting screws threaded transverselythrough one of said blocks having electrical connection with therespective conductors, said screw carrying block having transverse boresdisposed to receive conductors in contacting relation with the screws,and a second pair of screws threaded in the last mentioned blockdisposed to releasably maintain the last mentioned pair of conductors incontact with the rst mentioned screws.

2, In a conductor connection, an elongated body forming block ofinsulating material, an elongated clamping block of insulated materialmounted parallel with the body block, each of said blocks having alignedbores transversely through their medial portions, a clamping boltextended through the aligned bores having a head at one end and a nut atits opposite end. said bolt being adapted to clamp the blocks upon apair of conducting feeder wires extending transversely therebetween ateach side and perpendicular to the bolt, a pair of main connectingscrews of conducting material fitted in interiorly threaded bores in thebody block parallel with the bolt and making detachable electricconnection with the respective feeders, said body block being providedwith a pair of transverse bores perpendicular to and intersecting therespective main screw receiving bores adapted to receive branchconducting wires in contacting relation with said screws, said bodyblock also having interiorly threaded bores opening through its endsintersecting the wire receiving bores, and a pair of auxiliary screwsthreadedly engaging said end bores, said auxiliary screws being disposedperpendicularly to the branch wires to engage and hold the latter incontact with the main conducting screws.

CECIL W. SPENCE.

